diff --git a/Telegram/SourceFiles/apiwrap.h b/Telegram/SourceFiles/apiwrap.h
index 7b7a94b8f..e95cac078 100644
--- a/Telegram/SourceFiles/apiwrap.h
+++ b/Telegram/SourceFiles/apiwrap.h
@@ -21,6 +21,9 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #pragma once
 
 #include "base/timer.h"
+#include <QtCore/QObject>
+#include "mtproto/rpc_sender.h"
+#include "mtproto/core_types.h"
 #include "core/single_timer.h"
 #include "mtproto/sender.h"
 #include "base/flat_map.h"
diff --git a/Telegram/SourceFiles/application.h b/Telegram/SourceFiles/application.h
index eec0ffc84..d9ea37f0b 100644
--- a/Telegram/SourceFiles/application.h
+++ b/Telegram/SourceFiles/application.h
@@ -20,6 +20,9 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 */
 #pragma once
 
+#include "stdafx.h"
+#include <QApplication>
+
 class UpdateChecker;
 class Application : public QApplication {
 	Q_OBJECT
diff --git a/Telegram/SourceFiles/base/observer.h b/Telegram/SourceFiles/base/observer.h
index 362c6d42b..6b1797da4 100644
--- a/Telegram/SourceFiles/base/observer.h
+++ b/Telegram/SourceFiles/base/observer.h
@@ -22,6 +22,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 #include <vector>
 #include <deque>
+#include <QSharedPointer>
 #include "base/type_traits.h"
 
 namespace base {